Isotope geochemistry of stratified Lake "A," Ellesmere Island, N.W.T., Canada

M. O. Jeffries; H. R. Krouse; M. A. Shakur; S. A. Harris

doi:10.1139/e84-105

journal article Sep 01, 1984

Isotope geochemistry of stratified Lake "A," Ellesmere Island, N.W.T., Canada

M. O. Jeffries H. R. Krouse M. A. Shakur S. A. Harris

Canadian Journal of Earth Sciences Vol. 21 No. 9 pp. 1008-1017 · Canadian Science Publishing

View at Publisher Save 10.1139/e84-105

Abstract

Ionic composition, salinity, temperature, pH, tritium, and stable isotope compositions of water and ions were determined for samples collected in 1969 and 1982 from different depths of stratified Lake "A" on Ellesmere Island. Tritium contents and ionic and stable isotope compositions were diagnostic of recent fresh water overlying older, deeper trapped seawater. A temperature maximum occurs at 15 m in the freshwater–seawater transition zone. Salinity, δ18O, and δD data suggest that the lake evaporated slightly and acquired about 12% fresh water prior to stratification. Individual ion concentrations reveal a slightly modified cation composition and marked depletions in sulphate and enrichments in dissolved carbonate compared with modern ocean water. The δ34S, δ18O, and δ13C data for [Formula: see text] and [Formula: see text] attest to extensive anaerobic [Formula: see text] reduction during the lake's history.

Topics

No keywords indexed for this article. Browse by subject →

Metrics

32

Citations

0

References

Details

Published: Sep 01, 1984
Vol/Issue: 21(9)
Pages: 1008-1017
License: View

Authors

Cite This Article

M. O. Jeffries, H. R. Krouse, M. A. Shakur, et al. (1984). Isotope geochemistry of stratified Lake "A," Ellesmere Island, N.W.T., Canada. Canadian Journal of Earth Sciences, 21(9), 1008-1017. https://doi.org/10.1139/e84-105

Isotope geochemistry of stratified Lake "A," Ellesmere Island, N.W.T., Canada

You May Also Like